I'd like to caution against removal of zsys, it's pretty much the biggest differentiating feature between Ubuntu and other distros. It has saved my installation and data multiple times. I'd advise to restart the development of zsys and make it stable. I'd be willing to work on a gui front end for it with someone if Ubuntu commits to developing and supporting zfs and zsys, hopefully even defaulting it.
I'd like to caution against removal of zsys, it's pretty much the biggest differentiating feature between Ubuntu and other distros. It has saved my installation and data multiple times. I'd advise to restart the development of zsys and make it stable. I'd be willing to work on a gui front end for it with someone if Ubuntu commits to developing and supporting zfs and zsys, hopefully even defaulting it.